HP Officejet 2621 All-in-One Printer - Manual (Page 25)

4. Insert a stack of paper into the input tray with the short edge down and the print side up, and
slide the stack of paper down until it stops.
5. Slide the paper-width guide to the right until it stops at the edge of paper.
To load small-size paper
1. Raise the input tray.
2. Lower the output tray and pull out the output tray extender.
ENWW Load media 21